iphone - iOS: How do i prevent temporary files Visibility -

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I am working on an app that still produces temporary video from the image. But I do not want the user to see the temporary file I created. But when the app is producing a video file, this video lists it by the camera roll.

My question is how can I generate a temporary media file which is ' Camera Roll, iTunes and iCloud '?

Please help me in advance thanks.

Code: 

  [assetWriter Finish with Finnish writingHandler: ^ {NSURL * url = _outMovieURL; Elasette Library * Library = [[Elsace Library Library] init]; [Write LibraryWidth AudioAppetSite Photo Album: URL ClosingBank: ^ (NS URL * Asset URL, NSER * Error) {NSLog (@ "Don!"); }]; }]; This block:  
  [assetWriter finishWritingWithCompletionHandler:    
 
  
 The file is to be written in the camera roll so do not use it, instead you have made temporary video instead (or maybe it already has the  documentDirectory  When you are making this, you just do not want to write that file in the camera, write a temporary video file in the  documentDirectory  in it roll with this code).

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